This solar car kit is a universal kit that is easy to make. After hands-on installation, it can be tested in direct sunlight without a battery. As long as the is strong enough, it can run all the time.note:1. When pasting the motor, the gears must be anastomosed, aligned and fixed. 2. If there is a protective film on the solar panel, it should be uncovered before testing. 3. The gap between the Bush and the axle bracket should be kept between 0.5 and 1.5 m. If the clamp is too tight, the wheel will not turn.Age Range:5-7 YearsGender:UnisexModel Number:Solar Powered Car Toytype1:Solar Powered Mini Toy CarKnock Piano Scale:improve children's abilities of creativity and practiceAge Range:more than 3 years oldType :Powered Toy DIY Cartype2:Educational Gadget Hobby Funny Car and high quality.It is a DIY Solar forward car, open a spare parts package, handmade, you can make a solar car as the picture shown,On the summer sunlight, you can move forward, the car's speed is not fast, run more stable torque, with some climbing ability.Mini Size, convenient to store and carrySolar supply, don't need battery, the car will run under the It can improve children's abilities of creativity and practiceIt also train the patient of children when they assemble the carChildren could enjoy the when play with the carGreat gift for childrenIt is not finished car , you need to DIY by yourselfSize: approx. 8.0cm*7.5cm*3.2cmNet Weight: 50gColor: Black + GreenMaterial:plasticPackage Contents:1 * set Solar Toy DIY CarOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.